What is a Software Engineer at Anduril Industries?

As a Software Engineer at Anduril Industries, you are at the forefront of defense technology, building systems that directly support national security and autonomous operations. Unlike traditional defense contractors, Anduril operates with the speed and agility of a Silicon Valley startup. Your work will directly impact the capabilities of physical assets, ranging from autonomous drones to sensor fusion platforms and the proprietary Lattice OS.

You will be tasked with solving complex, real-world problems that bridge the gap between software and hardware. Whether you are developing low-latency backend systems, writing embedded C++ for robotics, or building intuitive frontend interfaces in React for operators in the field, your code will be deployed in high-stakes environments. This requires a deep commitment to reliability, performance, and scalability.

This role is critical because Anduril’s competitive advantage relies on software-defined capabilities. You will collaborate closely with hardware engineers, product managers, and deployment teams to rapidly prototype and iterate on solutions. Expect to take extreme ownership of your projects, driving them from initial concept to active deployment in a fast-paced, mission-driven environment.

Common Interview Questions

`

Getting Ready for Your Interviews

Preparing for an interview at Anduril requires a balance of strong computer science fundamentals, practical engineering skills, and a clear alignment with the company's mission.

Technical Execution and Problem Solving – You must demonstrate the ability to write clean, optimal code under pressure. Interviewers evaluate how you break down complex problems, your fluency in data structures and algorithms, and your capacity to adapt when new constraints are introduced.

System Design and Architecture – You will be assessed on your ability to design scalable, fault-tolerant systems. In the context of Anduril, this often means accounting for hardware constraints, real-time data processing, and disconnected or low-bandwidth environments.

Practical Domain Expertise – Depending on your specific team (Frontend, Backend, or Embedded), you must showcase deep knowledge of your tech stack. Interviewers look for practical ability, such as debugging real codebases, building functional components, or navigating framework-specific nuances.

Mission Alignment and "Anduril Speed" – Anduril highly values candidates who are genuinely passionate about defense technology and can operate in a highly ambiguous, fast-paced environment. You will be evaluated on your bias for action, your ability to articulate your past design choices, and your readiness to tackle unconventional engineering challenges.

Interview Process Overview

The interview process at Anduril is rigorous, multi-staged, and designed to test both your theoretical knowledge and practical engineering abilities. It typically begins with a recruiter phone screen focused on your background, your interest in the defense sector, and high-level team matching. This is followed by a technical screen, which may involve a live coding session over Zoom, a HackerRank assessment, or a practical framework-specific task like building a React component.

If you pass the technical screen, you will move to the final onsite loop, which is often conducted virtually but may occur in person at an Anduril headquarters like Costa Mesa. The final loop generally spans four to five hours and consists of multiple back-to-back sessions. You will face a mix of algorithmic coding challenges, a system design round, and behavioral interviews. For certain hardware-adjacent or specialized teams, you may instead be asked to deliver a 30-minute technical presentation on a past project, followed by rigorous Q&A and 1:1 interviews.

Expect the pace to be rapid and the interviewers to probe deeply into your technical decisions. The process is designed to simulate the collaborative but intense environment of the actual job.

`

{{experience_stats}}`

This visual timeline outlines the typical progression from initial screening to the final onsite loop. Use this to structure your preparation, ensuring you are ready for both standard algorithmic questions early on and deep architectural or project-based discussions during the final stages. Note that specific rounds may vary slightly depending on whether you are interviewing for a general software, frontend, or embedded role.

Deep Dive into Evaluation Areas

Data Structures and Algorithms

Algorithmic proficiency is a core requirement for passing Anduril’s technical screens and onsite coding rounds. Interviewers use these sessions to see how you translate abstract logic into optimal, bug-free code. Strong performance means not only arriving at the correct solution but also clearly communicating your thought process, analyzing time and space complexity, and handling edge cases proactively.

Be ready to go over:

• Graph Algorithms – Mastery of Depth-First Search (DFS), Breadth-First Search (BFS), Union-Find, and cycle detection.
• Search and Sorting – Implementing binary search variants and understanding the tradeoffs of different sorting algorithms.
• Data Structure Implementation – Fixing or building foundational structures like trees, hashmaps, or priority queues from scratch.
• Optimization – Refactoring brute-force solutions into optimal ones, especially when a function is called multiple times.

Example questions or scenarios:

• "Given a graph of network nodes, write an algorithm to detect if a cycle exists."
• "Implement a highly optimized binary search for a specific edge-case scenario."
• "How would you optimize this solution if this function is called millions of times per second?"

System Design and Architecture

System design at Anduril goes beyond standard web-scale architecture; it often touches on the intersection of software and physical systems. You are evaluated on your ability to design robust, scalable systems that can handle real-world constraints. Strong candidates use tools like ExcaliDraw effectively to map out components, data flows, and failure points while driving the conversation.

Be ready to go over:

• Real-Time Data Processing – Designing pipelines for sensor data, video feeds, or telemetry.
• Fault Tolerance and Reliability – Ensuring system uptime in disconnected or hostile environments.
• API and Microservices Design – Structuring backend services that communicate efficiently with minimal latency.
• Hardware-Software Integration – Understanding how software interacts with physical assets, edge computing, and limited compute resources.

Example questions or scenarios:

• "Design a system to ingest and process telemetry data from thousands of autonomous drones."
• "How would you architect a real-time tracking dashboard for operators in the field?"
• "Draw the architecture for a low-latency communication system between a central server and edge devices."

Practical Domain Knowledge

Depending on the role you are targeting, Anduril will test your practical ability to write production-ready code in your specific domain. This is not about theoretical knowledge; it is about execution. Strong performance involves writing clean, maintainable code, demonstrating familiarity with best practices, and debugging efficiently.

Be ready to go over:

• Frontend (React/TypeScript) – Building functional components, managing state, and implementing search/filter functionalities on the fly.
• Backend/Embedded (C++/Python) – Debugging broken C++ programs, managing memory, and understanding object-oriented design.
• Code Debugging – Navigating an existing, flawed codebase and identifying logical or syntax errors quickly.

Example questions or scenarios:

• "Build a React component from scratch that includes a search bar and filters a list of results."
• "Here is a broken C++ program. Walk me through how you would debug it and implement the fix."
• "Take this vanilla JavaScript class and refactor it into a modern framework of your choice."

Behavioral and Mission Alignment

Anduril is a mission-driven defense company, and culture fit is heavily weighted. Interviewers want to know why you are choosing defense over traditional tech and how you handle adversity. Strong candidates articulate their past experiences with passion, take ownership of their failures, and show a clear bias for action and collaboration.

Be ready to go over:

• Project Deep Dives – Explaining your most complex past project, the tradeoffs you made, and what you would do differently.
• Handling Ambiguity – Situations where you had to deliver results with vague requirements or shifting deadlines.
• Cross-Functional Collaboration – How you work with hardware engineers, product managers, or external stakeholders.

Example questions or scenarios:

• "Walk me through the hardest technical project you have worked on. Why did you make those specific design choices?"
• "Tell me about a time you had to deliver a critical feature with incomplete requirements."
• "Why do you want to work at Anduril, and how do you feel about working in the defense sector?"

`